本文選題：長江口深水航道 + 驟淤��； 參考：《河海大學(xué)學(xué)報(自然科學(xué)版)》2017年05期

【摘要】：為進一步研究臺風(fēng)中心氣壓、臺風(fēng)距離長江口距離(簡稱距離)、最大風(fēng)速半徑和移動風(fēng)速4個典型參數(shù)對長江口航道驟淤的影響水平,采用正交試驗方法,設(shè)計了64組典型試驗工況,選擇藤田-高橋圓形風(fēng)場經(jīng)驗公式架構(gòu)了臺風(fēng)場,然后采用SWAN模型模擬不同臺風(fēng)工況的波況,并計算牛皮礁站的波能。據(jù)波能的極差分析和方差分析,得出臺風(fēng)要素的敏感性次序。研究表明,長江口過境臺風(fēng)中,距離最敏感,而最大風(fēng)速半徑為較不敏感因素。選取主要的敏感性參數(shù)(距離、中心氣壓)為代表參數(shù),概化移動風(fēng)速和最大風(fēng)速半徑。在合理選取能夠引起驟淤的臨界波能的標(biāo)準下,給出較易引發(fā)驟淤的典型包絡(luò)線范圍,為驟淤的預(yù)報提供了新的參考指標(biāo)。
[Abstract]:In order to further study the influence of four typical parameters such as typhoon center pressure, typhoon distance from the Changjiang Estuary, maximum wind velocity radius and moving wind speed, on the sudden siltation of the Yangtze Estuary channel, the orthogonal test method is used. In this paper, 64 typical test conditions were designed. The typhoon field was constructed by using the empirical formula of the circular wind field of Fujida-Gaoqiao. Then the SWAN model was used to simulate the wave conditions of different typhoon conditions, and the wave energy of the Kupi reef station was calculated. According to wave energy range analysis and variance analysis, the sensitivity order of typhoon elements is obtained. The results show that the distance is the most sensitive and the maximum radius of wind velocity is the less sensitive factor in the Yangtze River Estuary transit typhoon. The main sensitive parameters (distance, center pressure) are selected as the representative parameters to generalize the moving wind speed and the maximum wind velocity radius. Under the standard of selecting reasonably the critical wave energy which can cause sudden siltation, the typical envelope range which is easy to cause sudden siltation is given, which provides a new reference index for the prediction of sudden siltation.
【作者單位】： 上海河口海岸科學(xué)研究中心;上海交通大學(xué)水動力學(xué)教育部重點實驗室;南京水利科學(xué)研究院河流海岸研究所;
【基金】：國家自然科學(xué)基金青年基金(41206072) 2016年港口航道泥沙交通行業(yè)重點實驗室開放基金(Yn216001)
【分類號】：TV148;U616

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